<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div>
        <h1>计数器</h1>
        <button>点击我加上1</button>
        <div class="count"></div>
    </div>
</body>

</html>
<script>
    const result = ref("1");
    const div = document.querySelector('.count');
    const button = document.querySelector('button');
    div.innerHTML = result.value
    button.onclick = function(){
        result.value++;
    }
</script>